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经营范围
发明名称
Scoophead running tool
摘要
申请公布号
GB2285997(B)
申请公布日期
1997.08.20
申请号
GB19950001428
申请日期
1995.01.25
申请人
* BAKER HUGHES INCORPORATED
发明人
BRIAN S * KENNEDY
分类号
E21B7/06;E21B23/06;E21B23/12;E21B41/00;(IPC1-7):E21B23/00;E21B7/08;E21B43/30
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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